Improvement in locks



NITED TATES PATENr riefen.

THOMAS GEORGE HAROLD, OF BROOKLYN, NEW YORK, ASSIGNOR TO HIM- SELF` ANDJOHN W. KISSAM, OF SAME PLACE.

iMPaovEMENT 1N Locks.

Specification forming part of Letters Patent N0. 10,S82, dated December8,1863.

To a/ZZ whom it may concern:

Be it known that I, THOMAS GEORGE HAR- OLD, of' Brooklyn, in the countyof' Kings and State of New York, have invented, made, and applied to usea certain new and useful Improvement in Locks; and I do hereby declarethe following to be a full, clear, and exact description of the natureof my said invention, reference being had to the annexed drawings,making part of this specification, wherein- Figure l is an exteriorelevation of said lock. Fig. 2 is a vertical section of the same. Fig. 3is a detached view of the concentric cylindrical tumblers as whenlocked. Fi g. 4 is a detached view of said tumblers in position foropening the lock. Fig. 5 is the hasp and ring detached. Fig. 6 is asection and elevation of the cylindrical tumbler, and Fig. 7 is asection and elevation of the notched ring of said tumbler, and Fig. Srepresents the Inanger of securing this lock when used for trunks,

Similar marks of' reference denote the same parts.

Tumblers for locks have heretofore been made of circular disks with anotch in one portion of the periphery, to take a stud on the bolt orhasp, and circular tumblers with turned-up flanges and decoy notches orteeth have been used for retaining a hasp or bolt, as will be seen byreference to Letters Patent granted to me August 5, 1862, and thelockcase has been screwed together, as also shown in the same patent.

My present invention is a modification of' and improvement upon myaforesaid Letters Patent, and consists in constructing` the tumblersthat have the decoy-notches as a series of concentric flan ged rings onewithin another, so that the flanges are employed in the setting of thetumblers, and the ring or pipe shaped tumblers set together and sustaineach other. I secure these tumblers with a center pin or bolt, and Ieffect changes in the lock by moving rings that surround the notches ofthe pipe-shaped tumblers, said rings only having one notch for thepassage of the shackle or bolt.

I attach the hinge of my shackle to a ring that surrounds the shellbetween the flanges of that shell so that the rivet or screw of saidhinge is protected, and this ring enables me to change the position ofthe shackle relatively with the indicators or dials, two or moremortises being provided in the case beneath the ring for the passage ofsaid shackle into the lock.

In the drawings, a is one half' of the shell or case, formed as a angedcylinder, within which are the dan ged tumblers l), c, and d. Eachtumbler is made as a short cylinder or ring, extending inward from theflange, and each ange becomes the dial by which the tumbler is moved.These tumblers being concentric sustain each other, and they areretained in place bya bolt or pin, e, that passes through a square holein the back part of l ofthe shell a, to prevent its turning, and 2 is anut to secure the bolt in place. j' is the other shell or half case,screwed upon the case a, and which sheilf covers and prevents access tothe nut 2. q is a ring surrounding the shells between the anges thereof,and h is the shackle hinged at 3, between lugs formed ou said ring, sothat the hinge 3, being between the flanges of the shell, is protectedfrom injury. The shackle passes through a nrortise in the ring andshell, and is provided with teeth 4 4, that set between theringtumblers. Each of these ring-tumblers -is provided with a notch,which, when brought online, allow the shackle to be entered orwithdrawn; and I also make decoynotches in the tuinblers, which notchesare not cut all through, and hence will not allow the teeth 4 to pass,but prevent any person opening the lock by turning the tumblers anddetermining the position of the notches by feeling or sound.

In order to facilitate the construction of the tumblers, I form each. oftwo parts, consisting of a notched cylinder, 5, Fig. 6, extending fromthe dial-flange, and containing any desired number of notches, and aring, 6, in which is but one notch, (see Fig. 7,) and I provide a pin orprojection on the inner part of' each ring, to take one of the notchesand cause the ring and tumbler to move together. It will now be seenthat when all the notches are on line, as seen in Fig. 4, the shacklecan be entered or withdrawn, and in this position the indicators of thelock, Fig. l, should be observed or noted, so as to bring the notches tothe same points by means ot' the indicators for the opening of the lock,and when the tumblers are turned indiscriminately, as in Fig. 3, thelock cannot be opened until the notches are again brought to line.

The red lines, Figs. 3 and 4, indicate the teeth on the hasp and thedirection of their motion in entering or leaving the lock.

The rings 6 6 may be detached from the tuinblers when the lock is ta-kenapart and pnt aga-in upon the respective tumblers with the stud in adifferent notch in the tumbler, thereby varying the point of the indexat which the lock will open, and effecting a permutation.

The case a f may have two or more mortises, as at 7, for the passageofthe moving end Vof the shackle, andY hence when the shackle iswithdrawn the ring and shackle can bev turned around on the shell to oneoi.' the other mortises; and the tumblers must all be turned to the samepoint, in order to allow of the shackle passing in. Hence the indicatoron the case a will stand at a different number or letter on the dials orindicators of the tumblers.

It will be evident that in place of having a swinging shackle. theshackle might enter and leave on a radial line to the lock-such would bethe case if the lock were used on boxes, trunks, 85e., where the shacklewould be on the lid and the lock on the other part of such box ortrunk-and in order to attach the lock itselt', all that is necessary isto make a circular hole and screw the case together therein, as seen inFig. 8, the part b of the case being entered from inside and the part afrom outside the iianges holding the lock in place, and in this instancean opening may be left for access to the nut 2, so that the tumblers maybe removed and changed without unscrewing the shells.

What I claim, and desire to secure by Letters Patent, is-

1 A changeable ring, 6, notched for the passage ofthe bolt or shackle,in combination with a notched circular tumbler, whereby the permutationsor combinations may be changed, as specilied.

2. The ring G, carrying the shackle, in combination with the divided andflanged case, secured together, as specified, whereby the hinge of theshackle is secured between the anges, as set forth.

3. The divided lock-case, secured together as speciiied, in combinationwith the ring carrying the shackle, when said case is provided with twoor more openings, whereby the position of the shackle relative to theindicators can be changed, when the shackle is withdrawn, withoutopening said case as specified.

In witness whereof I have hereunto set my signature, this 16th day otSeptember, A. D. 1863.'

THOS. GEO. HAROLD.

Witnesses N. STAFFORD, Clins. H. SMITH.

